(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "Woodworking"

4-Foot Wooden Digital Clock 



.1 



Make Projects 



build, hack, tweak, share, discover. 



4-Foot Wooden Digital Clock 

Written By: Wes 

SUMMARY 

Need to know what time it is, but don't own a phone, computer, microwave, or any of the 
other 100 clocks you probably already have? How about a huge mahogany digital clock to 
prove your geek prowess? 



Step 1 — 4-Foot Wooden Digital Clock 




• Get some wood. I chose mahogany. 

• Create a template for your 7-segment digit. 



© Make Projects 



www.makeprojects.com 



Page 1 of 5 



4-Foot Wooden Digital Clock 



Step 2 




• Use a scroll saw to cut the LED segments out of the wood. 

• Use a plunge router to hollow out the back side of the wood. 

• Stain the top side of the wood. I used a satin poly. 

Step 3 




• Connect the digits together using brass tubes and super glue. 



© Make Projects 



www.makeprojects.com 



Page 2 of 5 



4-Foot Wooden Digital Clock 



Step 4 




• Get some plexiglass and cut pieces to the shape of the LED segments. (I used the scroll 
saw for this.) 



Step 5 




• Get a few LEDs (I used blue 5mm). 

• Drill holes in the edge of the plexiglass. 

• Super-glue the LEDs into the holes. 



© Make Projects 



www.makeprojects.com 



Page 3 of 5 



4-Foot Wooden Digital Clock 



Step 6 




• Paint the back and edges of the LED segments with metallic paint. 

• Sand the front of the LED segments. The scratches will diffuse the light. 

• Apply some voltage. 

Step 7 




• Take 2 thin sheets of plexiglass and sandwich rice paper between them. 

• Hot-glue the LED segments to the plexiglass. 

• Solder wires to all of the LEDs. 

• Hot-glue the plexiglass to the inside of the digits. 

• Connect each of the LED segments to a ULN2003A, and a 74HC595 chip. See the 
schematic. I also added a 220ohm resistor per LED. 



© Make Projects 



www.makeprojects.com 



Page 4 of 5 



4-Foot Wooden Digital Clock 



Step 8 




• Connect the chips to an Arduino and use the time library to "ShiftOut" the time to the 
74HC595S. 

• Stand back (way back) and check the time. 

• Put it up on your cubicle for all your fellow drones to admire! 

This document was last generated on 2012-10-31 11 :33:29 PM. 



© Make Projects 



www.makeprojects.com 



Page 5 of 5